monitor KY-28 which is installed in the KY-28 No. 1
The HYL-3/TSEC cables are attached as
follows: No. 52 to RT/1, No. 55 to RT/2, and No. 57 to
traffic that is
X-MODE connectors on the HYL-3; No. 59 to Power
These connections provide for
monitoring on any C-1611D/AIC receiver position No. 1.
Control Indicator C-8157(*)/ARC No. 1 powers and
controls number 1 KY-28, which is used by the operator
to monitor all secure retransmission traffic.
28 is not
This is done
No. 56 and
No. 35 (P1)
to the KY-
28 No. 1
by using the
only will be
3-12. Retransmission Starting Procedures
a. Apply power to console. Make sure FM-1, FM-2,
INT and SEC circuit breakers are pushed in (energized).
b. On the ICS box-1 set the VOL control to
midposition and the transmit interphone selector switch
to position 1.
c. On the HYL-3/TSEC, set the POWER switch to
ON: VOLUME midposition, and FUNCTION switch to
d. On FM control head station No. 1, set the
SQUELCH switch to TONE; VOL control to midposition
clockwise; MODE CONTROL switch to T/R; and the
frequency selector to operating frequency of the channel
at station 1 (either ground terminal station may be
designated channel station number one).
e. On FM control head station No. 2 (center unit)
set the FUNCTION switch to T/R, SQUELCH switch to
TONE and the frequency selector to the operating
frequency of channel station 2.
f. After the transceivers have cycled to the operating
frequencies, set the FUNCTION switch on the HYL-3 to
g. Plug the H-157/U (headset) into the U-94A/U
from the operator's C-1611(*)/AIC position one.
3-13. Retransmission Preoperation Procedures
at station 1
to listen to